Tank-flushing device.



P. HAAS.

TANK FLUSHING DEVIGE.

APBLIOATION. FILED,- JUNB 12, 1912.

Patented Sept [NVE/WOR I'HE NORR/s PETERS co., HHUIOYLITHO., WASHING/0N.D. CA

FNM

PHILIP HAAS, OF DAYTON, OHIO.

TANK-FLUSHING DEVICE.

T0 all whom it may concern Be it known that I, PHILIP HAAs, citizen ofthe United States, residing at Dayton, in

the county of Montgomery and State of Ghio, have invented certain newand useful Improvements in Tank-Flushing Devices; and I dohereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

vMy present invention is an improvement uon the apparatus shown in myformer Patent `#1,034,789, granted August 6, 1912, and consists in thenovel features hereinafter described, reference being had totheaccompanying drawing which shows one embodi ment of 'the invention whichI have selected for purposes of lillustration,and said invention isfully disclosed in thefollowing description and claims. i y

The type ofl apparatus shown'herein and in my ormerapplication is whatis termed in the art an anti-freezing water closet valve mechanism, aportion of the valve mechanism being located in the ground below thefreezing line and provided with a drain pipe communicating `from thevalve mechanism to the soil pipeI'or draining the service pipe to thecloset after the iushing of the closet so as to` prevent the pipe frombursting by the 'freezing of water therein. 'Ihe specific form of .thedevice herein shown is, like that `shown in my former patent, intendedto be used with a ush tank "for4 accumulating water in said tank whenthe seat is depressed, and on the release Aof the seat, closing 'theinlet from the main and discharging the accumulated water from the tankto the closet bowl. for iiushing purposes. Devices of this character areordinarily installed in out-houses and other places where needed andconnected `directly to a water main which in most cases `also supplieswater to the adjacent house or housesl for drinking purposes and thelike.,

Itis easily possible under such circumstances orithe soil pipe to becomeclogged so that the water will back up in the soil pipeand bowl and byreason of the drain pipe connection between the soil pipe andthe valvemechanism, andthe flush pipe connectionbetween the bowl and valvemechanism, or both, that the valve casing 'may be filled withcontaminated water which may beA Specification of Letters Patent.

Patented sept. 29, 1914.

Application nea :rune 12, 1912. serial No. 703,345.

forced back into themain by the air pressure Y i in the tank orotherwise` upon the opening vof the water inlet valve, a sufficientdistance to find its way to an adjacent hydrant, sink or other apparatusfor delivering drinking water, and thus produce sickness and possibleloss of life. In the construction shown in my former patent, I rovided acheck kvalve between the drain pipe and the valve casing tovprevent thecontamination of the water through the drain pipe, but furtherinvestigation of the subject has shown me that even with such aconstruction, contamination of the water in the main may take placethrough the flush pipe under certain circumstances, `and the object ofmy present invention is to positively preclude the possibility of anycontamination of the water in the main and the evil consequences whichwould ensue from such pollution, by providing a check valve between themain and the water inlet of the valve apparatus below the connection ofthe drain pipe therewith so that there can be no contamination of thewater in the main either from the drain pipe or flush pipe, orotherwise, and water having once passed into the valve mechanism cannever find its way back into the `main so as to pass to another outlet.

In the drawing I have illustrated the best form in which I havecontemplated embodying my said invention and the same is set forth inthe following description and claims.

In Figurel of the drawing, is shown a vertical section of my improveddevice. Fig. 2 is a section of the device on line 2 2 of Fig. 1. Fig. 3is a detailed sectional view of a portion of the apparatus shown in Fig.1, showingthe check" valve between the inlet valve and the water main inclosed position.

In said drawing A is a part of the bowl of the closet and B is the seatthereof, C is the main body of the devicev consisting of a casing havingthe inlet chamber C and the outlet chamber C21 the two being divided 4bythe partition c. The pipe'a is the outlet pipe connecting the outletchamber C2 with the bowl.

Thetop of the chamber C2 is provided with a threaded opening which isclosed by a cap c', through which the valve rod D extends, the saidv capbeing provided witha stuffing box c* preventing the egress of `waterthrough the cap. The chamber C of cas To the bottom of 'the casing C isconnected a pipe D and to the lower end of said pipe is connectedanother valve casing E. The .casing E is provided with a valve chain-liber E and a drain outlete. The partition c-of the casing C has athreaded opening located directly over and in line ywith the pipe Dand-in this openingis secured the valve chamber C3.

y is open at the top and bottom and -isvof uniform diameterexcept thatthe' upper end is flared outwardly to a slight degree.

The rod D is provided with the valve c2 andwhen the rod is in normalposition is below the lower end of the valve chamber C3'. The valve c2is fitted to the interior of the valve chamber C3 and when raised toengage with said valve chamber closes the Same and prevents any flow ofwater from the tank through the outlet chamber to the bowl. Acontinuation of the rod D or other connection extends downward throughthe pipe D into the casing E and to its lower end is secured the valveE2. This valve E2 is of solid cylindrical form and works in the Thelower end ofthe valve E2 is provided with packing e3 serving as a valveto close the opening e2 when the valve E2 is in its lowest position. Thesupplementary chamber F is provided with inwardly projectinglongitudinal or vertical flanges f which serve to guide the valve Fwithin this chamber and permit water to flow around said valve whenraised fromits seat. v Y

The bottom of the chamber F is connected with a water supply pipe G, theupper end of which is provided with a seat g for the valve F. The lowerend of the valve E2 is provided with the downwardly extending rod fQThis rod is smaller than'the opening in the bottom of the casing E andis capable of vertical adjustment and when the said valvey E2 is in itshightest position will hold the said valve F away from thel open* ing e2in the bottom of the casing E. When the valve E2 is in its lowestposition and the opening e2 is closed the valve F will fall by itsweight and vprevent any back flow from the chamber `F into the supplypipe. The stem 7" atthe bottom of .thevalve rod D will This valvechamber C3 also serve'to positively push the4 valve Flr downward shouldthere be any resistance to `its action..

' The Valve c2 is located so that in Vits lowest and normal position itwill besuficiently below the valve chamber C3 to permit the Lwater inthe tank to flow through the valve chamber into the outlet chamberthence to the howl to flush lthe same. In case the rod D is made'of asingle piece the valve will be secured upon it in the same position. j

Any preferred form of devices may be employed to connect thel valve rodwith.v the seat whereby pressurel on the seat will raise the rod andopen the'inlet valves F and E and close the valve c2. y

The valve E is of such length that when in( its lowest position it willopen the drain outlet e and when raised as described will close it. v

In the use of devices of this character, not provided with my presentinvention, in case the soil pipe `becomes clogged so that the sewage isnot discharged, the flush water will be-retained in the bowl and mayeven overflow the same, with the result that contaminated water passeseither through the flushing valve or through the drain outlet into thepipe vbetween the inlet valve and the flushing valve, and the water inthe apparatus becomes contaminated.` On the next op eration of theapparatus the incoming water will mix with the polluted `water and passinto the tank until arrested by the accumulated air pressuretherein sothat all the water in the apparatus is more or less polluted.`

pipe in which the movement of the water is resisted by friction withtheI pipe and the pressures being equal in the tank and main ontheopening of a faucet in the immediate vicinity of the closet, thewater will be discharged fromthetank instead of the main if the seat isoccupied and the inlet valve opened. According to my invention','however,. this pollution ofthe water delivered lfrom an adjacent faucetfisabsolutely preventedno matter how the'pollutionofthe water within`l thecloset systemmay have occurred, because immediately upon the ceasingofflow from the water main to the'tank, the check valve below the inletvalve seats itself, kas shown in Fig. 3, and even.r though the inletvalve may be held openindefinitely, no water can :pass from theiclosetySystem "purposes, which is liable to occur at any positively prevented.

It will be seen that on disconnecting the time adjacent to such closetinstallations, is

j rod D from its actuating connections and removing the cap c the rodand the parts connected therewith can be drawn upward and removedwithout turning the water olf as on raising the rod f the valve F willbe raised by the pressure of the water and seat itself against thebottom of the casing E, closing it against any inflow of water. Thisaction is additional to the main function of this valve, which is toseat itself under the back pressure and prevent theA return of any waterfrom the valve mechanism of the flushing apparatus to the main watersupply. I do not desire to be limited to the exact form of valve F. Aball valve with `proper seats will answer the same purpose.

Iletthe combination with the bowl, a flushing pipe connected thereto,and an inlet valve for said iiushing pipe located below the bowl, saidflushing pipe being provided with a Adrain outlet adjacent to the inletvalve, adapted to be connected to the soil pipe, of a check valveinterposed between the inlet valve and the water supply for the ushingpipe, and below the connection of the said drain outlet with theflushing pipe, said check valve being constructed to close under backpressure to positively prevent any contamination of the water supply4from the drain outlet and from the connection between the flushing pipeand bowl.

2. In a flushing device for water closets, the combination with thebowl, a flushing pipe Connected thereto, and an inlet valve for saidflushing pipe located below the bowl, said flushing pipe being providedwith a drain outlet adjacent to the inlet valve, adapted to be connectedto the soil pipe, of a ycheck valve located between the inlet valve andthe water supply therefor and below the connection of the drain outletwith the ushing pipe and a valve seatA below said valve, said valvebeing adapted to close under back pressure to positively preventcontamination. of the water in the inlet "pipe from the drain outlet,and from the connection of the flushing pipe with the bowl, said inletvalve being provided with a projection to engage the check valve tolimit its upward movement and to positively force it downward toward itsseat when the inlet valve is in closed position.

3. In a flushing device for water closets, the combination with thebowl, a flushing pipe connected thereto, and an inlet valve for saidfiushing pipe located below the bowl, said flushing pipe being providedwith a` drain outlet adjacent to the inlet valve, adapted to beconnected to the soil pipe, of a check valve interposed between theinlet valve and the water inlet pipe and` located below the connectionof the drain outlet with the flushing pipe, a valve seat for said checkvalve located between said valve and Vthe inlet valve, and a valve seatfor the check valve located between it and the water supply, said inletvalve being provided with a projection for engaging the check valve andnormally holding it away from the valve seat adjacent to the inlet valveand for forcingit positively toward the other of said valve seats whenthe inlet valve is in closed position, whereby the said check valve willpositively prevent contamination of the water supply from the drainoutlet and from the connection between the flushing pipe and the bowl.

4. In a ushing device for water closets, the combination with a flushingpipe, atank and a bowl operatively connected therewith, and valvemechanism including an inlet valve below the bowl, said flushing pipebeing provided with a drain outlet adjacent to the inlet valve, of acheck valve interposed between the inlet valve and the water supply andlocated below the connection of the drain outlet with the flushing pipe,and constructed to close under back pressure to positively prevent thecontamination of the water supply for the flushing device under the backpressure lof the tank, from the drain outlet and from the connectionbetween thel bowl and the iiushing pipe.

In testimony whereof I aiiiX my signature, in the presence of twowitnesses.

` PHILIP HAAS. Witnesses:

Pmn VOLK,

L. E. FELDMAN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

